Southern California -- this just in

Man held in girlfriend's killing after post appears on Facebook

A San Bernardino County man accused in the beating death of his pregnant girlfriend was arrested after a post appeared on his Facebook page implying that her death was an accident.

Willie Davis Hines Jr., 23, was booked into the San Bernardino Central Detention Center on two counts of murder in connection with the death of Tatjana Cruz, 24, and her unborn child, the San Bernardino County Sheriff's Department said Tuesday.

Hines was arrested after he flagged down a security guard at a mall in San Diego late Monday and told him he was wanted for questioning in a murder, the department said in a statement.

He was being held Tuesday without bail.

Hines allegedly beat Cruz after a dispute, authorities said. She was taken to a hospital, where doctors discovered that the unborn child she was carrying was dead, possibly because of the beating, authorities said. Cruz died at the hospital.

Afterward, a post appeared on Hines' Facebook page acknowledging that he and Cruz had had a dispute sparked by his revelation that they were no longer in a "monogamous relationship."

The post apologized for Cruz's death and the death of the fetus.

"I know there is no way to believing anything I have to say but just know I am not armed nor am I dangerous," the post said. "I fled the scene, because I don't think there is any way to prove that this is not just a act of pure hate."

Authorities said they were investigating whether Hines or someone else wrote the post.